twstools is a simple set of command line tools around the Interactive Brokers TWS API with the purpose of having a powerful scriptable toolbox to automate "jobs" like downloading historical data, tracking account info or submitting orders, etc.

Fix8 is a modern open source C++ FIX framework featuring complete schema driven customisation, high performance, and fast application development. The system is comprised of a compiler for generating C++ message and field encoders, decoders, and instantiation tables, a runtime library to support the generated code and framework, and a set of complete client/server test applications. For the same message, Fix8 encodes 3.2 times faster and decodes 2.3 times faster than Quickfix, an average of 2.7 times. In other words, it reduces encode latency by 69% and reduces decode latency by 56%.

uterus is a codec library for financial tick data with an emphasis on market data integrity and maintainability. It comes with a set of tools to convert (mux) and print (demux) data from some sources, and to perform standard tasks like selecting instruments, creating snapshots and candles from tick data, etc. Special care is taken to provide longevity and consistence. All timestamps are internally converted to coordinated time, and price and quantity quotes are converted to a monetary datatype which doesn't suffer from rounding errors. Most importantly, meta data is stored along with the payload data in an inseparable unit, to provide self-contained and self-documenting files or network streams.

CreditAnalytics is a financial fixed-income credit analytics, credit risk, bond analytics, and bond risk library, developed with a special focus towards the needs of the credit trading and bond trading community (CDS, CDX, CDO, and bonds of all types and variants).

MixERP is a multi-currency, multi-lingual, and multi-establishment ERP solution. It allows you to operate multiple Office Groups and Offices, and consolidate and/or split reports on the fly, and provides a policy engine for G/L access, integrated workflow engine for transaction posting and verification, automatic decision making based on your configuration, and end of day operation.

MibianLib is an options pricing library offering the ability to calculate the price, the implied volatility, the Greeks or the put-call parity of an option using the Garman-Kohlhagen, Black-Scholes, and Merton models.

twsapi is a portable C++ API for Interactive Brokers TWS. It is almost identical to the original IB C++ Posix API. It contains several bugfixes and usage improvements, and uses the autotools build system.

Fast FIX Parser (FFP) is a library for parsing Financial Information eXchange (FIX) messages. It takes input bytes as they arrive from, for example, a socket, and converts them into a representation of FIX messages which can be further analysed for semantic checks, converted into “business” structures, etc. It also provides a way to specify which tags are allowed for a particular message and verifies this specification at runtime.